[17p-A402-1~18] 3.12 Nanoscale optical science and near-field optics

▲ [17p-A402-18] Near-field Coupling between Double-layer Metallic Patterns

〇(PC)Zhengli Han¹, Seigo Ohno², Yu Tokizane¹, Kouji Nawata¹, Takashi Notake¹, Yuma Takida¹, Hiroaki Minamide¹ (1.Riken, 2.Tohoku Univ.)

Keywords:Near-field coupling, double-layer metallic patterns, metamaterial

Near-field coupling plays an essential role in near-field optics, such as the near-field scanning optical microscope (NSOM). Optimized near-field coupling can efficiently improve the system or device performance. In the metamaterial with subwavelength metallic structures, the control of the near-field coupling in between metallic patterns, especially in between difference layers of metallic patterns, can bring novel functionalities to metamaterial devices for optics. In this paper, we analyze the near-field coupling within a unit of double-layer metallic patterns to show a new strategy for metamaterial devices in terahertz (THz) optics.